rarebitn.欧洲种的兔子；家兔rareadj.罕见的；珍贵的；煎得嫩的rare earth concentrate稀土精矿rare earth luminesence稀土荧光粉rare earth naphthenate环烷酸稀土金属盐rare-earth catalyzing稀土催渗Rare-earth Extraction稀土萃取rare earth modification稀土变质Rare animals and plants珍稀动植物rare gas recovery plant稀有气体提取设备rare earth-iron alloy稀土铁合金rare earth-rich phase稀土复合物